Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2021 9 6.  Predictions up to the next  14.0 days:

     Date     Time(AURA) AURA Lat/Lon Date Time(NPP) NPP Lat/Lon    Distance(km)  Time Diff(sec)
 09/08/2021   18:21:47   (  71.41, 135.86) 09/08/2021   18:20:34  (  71.76, 133.81)   81.87                73
 09/08/2021   19:08:28   ( -79.45, -30.66) 09/08/2021   19:08:28  ( -79.46, -30.57)    2.12                 0
 09/11/2021   10:35:36   (  79.27, -83.58) 09/11/2021   10:34:44  (  79.28, -83.51)    1.49                52
 09/11/2021   11:24:58   ( -79.48,  85.42) 09/11/2021   11:25:24  ( -79.47,  85.30)    2.65                26
 09/14/2021   02:52:05   (  79.30,  32.45) 09/14/2021   02:51:39  (  79.29,  32.33)    2.82                26
 09/14/2021   03:41:25   ( -79.58,-158.00) 09/14/2021   03:42:16  ( -79.58,-158.01)    0.40                51
 09/16/2021   19:08:32   (  79.43, 149.23) 09/16/2021   19:08:31  (  79.43, 149.23)    0.28                 1
 09/16/2021   19:56:15   ( -81.82,  -6.12) 09/16/2021   19:57:28  ( -81.30,  -5.76)   58.06                73
 09/19/2021   10:35:42   ( -79.23,  96.12) 09/19/2021   10:34:49  ( -79.23,  96.14)    0.47                53